NGK
Description
Keep your tune-up on track with the NGK BR8HS-10 nickel resistor spark plug. Its short-reach design fits engines calling for this plug specification, while the built-in 5 kO resistor helps suppress ignition-related electrical interference. With a removable terminal nut and standard 21 mm hex, it’s a straightforward service replacement for your next ignition refresh.
Key Features
- Short-reach fit: 12.7 mm (1/2 inch) reach for matching cylinder heads
- Resistor design: 5 kO resistance helps suppress electrical interference
- Nickel electrodes: Standard 2.5 mm center electrode and a single ground electrode
- Removable terminal nut: Accommodates the appropriate plug-cap connection
- NGK heat range 8: For engines specifying this plug and heat range
Technical Specifications
- Brand: NGK
- Part number: SP7
- Plug designation: BR8HS-10
- NGK stock number: 1134
- Thread diameter: 14 mm
- Thread pitch: 1.25 mm
- Seat type: Gasket
- Thread reach: 12.7 mm (1/2 inch)
- Hex size: 21 mm (13/16 inch)
- Terminal type: Removable nut
- Overall height standard: ISO
- Standard gap: 1.0 mm (0.039 inch)
- Center electrode: Nickel, standard type, 2.5 mm diameter, non-projected
- Ground electrode: Nickel, standard type, quantity 1
- Resistor: Yes, 5 kO
- NGK heat range: 8
Compatibility
| Application | Fitment Requirement |
|---|---|
| Engines specifying NGK BR8HS-10 / 1134 | Match thread size, reach, gasket seat, heat range, resistor requirement, and specified gap |
Confirm the correct plug and gap in your vehicle or engine service information before installation. Thread size alone does not establish compatibility.
Installation Torque Specifications
- Cast-iron cylinder head: 18–25.3 lb-ft
- Aluminum cylinder head: 18–21.6 lb-ft
Follow the engine manufacturer’s installation instructions and specified tightening torque for your application.
Product Diagrams
Features
Specifications
Brand: NGK | Part number: SP7 | Plug: BR8HS-10 | NGK stock number: 1134 | Thread: 14 x 1.25 mm | Reach: 12.7 mm | Gasket seat | Hex: 21 mm | Removable terminal nut | Height standard: ISO | Gap: 1.0 mm (0.039 in) | Center electrode: Standard nickel, 2.5 mm, non-projected | Ground electrode: 1, standard nickel | Resistor: 5 kΩ | Heat range: 8 | Torque: Cast iron 18–25.3 lb-ft; aluminum 18–21.6 lb-ft
Model Fitments
Engines specifying NGK BR8HS-10 / 1134; verify vehicle application and required gap
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
